Borla 20155 Single Oval Rolled Angle-Cut Tip w/ Clamp Borla Embossed Made of corrosion resistant aircraft quality stainless steel which decreases the fatigue incurred on these parts during high performance uses BORLA uses patented straight-through and multi-core technology to help increase horsepower and torque. Precision manufactured using aircraft-quality stainless steel, guaranteed to look like new for one million miles. Outer Diameter: 4.25" x 3.5" " Inlet Size: 2.5" Length: 7"